Device for eliminating siphonage

Abstract

The utility model discloses a device for eliminating siphonage, and the device comprises a pipeline, one end of which is located in a higher-place pool, and the other end of which is located in a lower-place pool; the drainage pump is connected with a pipeline in the high-level pond and is used for draining water to the low-level pond; the normally-open electromagnetic valve is arranged on the pipeline and used for controlling connection or disconnection between the pipeline and external air; wherein the draining pump is started, and the normally-open electromagnetic valve is shut off immediately; when the drainage pump is turned off, the normally-open solenoid valve is switched on in a delayed manner. According to the device, siphonage in the pipeline can be eliminated through the normally-open solenoid valve, automatic drainage is stopped, the pipeline can be prevented from being frozen due to the fact that the pipeline is filled with liquid after the pump is stopped, and meanwhile high-pressure water in the pipeline can be prevented from being sprayed out through delayed conduction of the normally-open solenoid valve.

Description

Technical Field

[0001] The present application relates to the technical field of siphon pipes, and in particular to a device for eliminating siphon phenomena. Background Art

[0002] In the industrial production process, when the high-level pool drains water to the low-level pool (especially when the drainage pipeline is open to the sky and the distance is long, and the drainage drop from the high level to the low level is large), although the drainage pump stops running, the drainage continues to be automatically drained due to the siphon phenomenon in the drainage pipeline. It is usually necessary to manually close the valve to block the siphon phenomenon, but if the manual closure is not timely, it will cause excessive drainage, and part of the drainage will be temporarily stored in the pipeline. In winter, the pipeline will be frozen and cracked due to water accumulation in the pipeline. At the same time, an air intake valve can be set on the pipeline to balance the pressure in the pipeline by air intake, thereby blocking the siphon phenomenon. However, the air intake valve is usually opened immediately after the drainage pump stops. At this time, because the negative pressure has not yet been formed in the pipe, there is still a high water pressure temporarily, and water will spray out.

[0003] Therefore, in response to the above technical problems, how to stably eliminate the siphon phenomenon and protect the pipeline from freezing and cracking in winter is a technical problem that technical personnel in this field need to solve. Utility Model Content

[0004] The purpose of the present application is to provide a device for eliminating the siphon phenomenon, which can automatically eliminate the siphon phenomenon, stop automatic drainage, and prevent the pipeline from being filled with liquid and freezing the pipeline after the pump is stopped, thereby ensuring normal drainage and eliminating the workload of manually closing the valve, and protecting the pipeline from being frozen and cracked in winter.

[0005] To achieve the above purpose, the present application provides a device for eliminating siphon phenomenon, comprising:

[0006] A pipe, one end of which is located in the high-level tank and the other end is located in the low-level tank;

[0007] a drainage pump connected to the pipeline in the high-level pool and used to pump water into the low-level pool;

[0008] A normally open solenoid valve, arranged on the pipeline, for controlling the connection or disconnection between the pipeline and the external air;

[0009] Among them, when the drainage pump is turned on, the normally open solenoid valve is immediately turned off; when the drainage pump is turned off, the normally open solenoid valve is turned on with a delay.

[0010] Preferably, it also includes a control circuit for controlling the operation of the drainage pump, the control circuit includes a normally open contact KM for controlling the power on and off of the motor and an auxiliary normally open contact KM1 connected in parallel with the normally open contact KM, the auxiliary normally open contact KM1 is connected in series with a time delay relay coil KT, the normally open delayed disconnect contact of the time delay relay coil KT is connected in series with the normally open solenoid valve, and after the two are connected in series, they are connected in parallel with the auxiliary normally open contact KM1 and the time delay relay coil KT.

[0011] Preferably, when the auxiliary normally open contact KM1 is closed, the time delay relay coil KT is energized immediately; when the auxiliary normally open contact KM1 is opened, the time delay relay coil KT is de-energized immediately, and the normally open delayed opening contact is opened after a delay of 5 seconds.

[0012] Preferably, a manual valve is also provided on the pipeline, and the manual valve is arranged in parallel with the normally open solenoid valve, and is used to manually control the connection or disconnection between the pipeline and the external air.

[0013] Preferably, the water inlet end of the pipeline located in the high-level pool is higher than the water outlet end of the pipeline located in the low-level pool.

[0014] Preferably, the normally open solenoid valve is located at a high position of the pipeline, so that after the normally open solenoid valve is turned on, the accumulated water in the pipeline located on the side close to the low-level pool is discharged into the low-level pool.

[0015] Compared with the above background technology, the present application sets a normally open solenoid valve on the pipeline, and the normally open solenoid valve is used to control the connection or disconnection between the pipeline and the external air, so as to balance the negative pressure inside the pipeline and eliminate the siphon phenomenon. At the same time, the normally open solenoid valve is connected to the control circuit of the drainage pump, that is, when the drainage pump is turned on, the normally open solenoid valve is immediately energized and the normally open solenoid valve is turned off, and the pipeline is drained normally at this time; when the drainage pump is turned off, the normally open solenoid valve is delayed to lose power, so that the normally open solenoid valve is delayed to be turned on, and during the time of delayed conduction, the high-pressure water generated by the drainage pump in the pipeline will gradually tend to low-pressure water when the drainage pump is turned off. At this time, the normally open solenoid valve reaches the specified delayed conduction time, thereby avoiding water from being sprayed out from the normally open solenoid valve. Therefore, the device can eliminate the siphon phenomenon in the pipeline through the normally open solenoid valve, stop automatic drainage, and avoid freezing the pipeline due to full liquid in the pipeline after the pump is stopped. At the same time, the delayed conduction of the normally open solenoid valve can avoid the high-pressure water in the pipeline from being sprayed out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0017] FIG. 1 is a schematic diagram of the structure of a device for eliminating siphon phenomenon provided in an embodiment of the present application.

[0018] In the figure: 1, high-level tank 2, low-level tank 3, drainage pump 4, pipeline 5, manual valve 6, normally open solenoid valve 7, control circuit 71, normally open contact KM 72, auxiliary normally open contact KM1 73, delay relay coil KT 74, normally open delayed disconnect contact. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] As shown in Figure 1, in this embodiment, a device for eliminating the siphon phenomenon is provided, which includes a pipeline 4, a drainage pump 3 and a normally open solenoid valve 6. The pipeline 4 serves as a drainage pipe, one end of which is located in the high-level pool 1, and the other end is located in the low-level pool 2. At the same time, the water inlet end of the pipeline 4 located in the high-level pool 1 is higher than the water outlet end of the pipeline 4 located in the low-level pool 2, thereby satisfying the conditions for generating the siphon phenomenon.

[0023] The drainage pump 3 is connected to the pipeline 4 in the high-level pool 1, so as to pump water from the high-level pool 1 to the low-level pool 2; the specific setting method of the drainage pump 3 will not be described in detail here, and you can refer to the existing technology to ensure that it can achieve the water pumping effect.

[0024] The normally open solenoid valve 6 is arranged on the pipeline 4, and is used to control whether the pipeline 4 is connected to the external air or not; in other words, when the drainage pump 3 works normally, the normally open solenoid valve 6 is automatically closed when powered, so that the drainage can be carried out normally; when the drainage pump 3 stops working, the normally open solenoid valve 6 loses power, so that the pipeline 4 is connected to the external air, balancing the negative pressure in the pipeline 4, thereby eliminating the siphon phenomenon.

[0025] Furthermore, when the drainage pump 3 of the present application is turned on, the normally open solenoid valve 6 is immediately energized, thereby shutting off the connection between the pipeline 4 and the external air, and ensuring normal drainage of the pipeline 4. When the drainage pump 3 is turned off, the normally open solenoid valve 6 needs to be de-energized for a time, so that the normally open solenoid valve 6 is turned on for a time delay; that is, the normally open solenoid valve 6 will return to the normally open state after stopping the pump for a certain period of time, thereby preventing the high-pressure water in the pipeline 4 from spraying out from the normally open solenoid valve 6.

[0026] In summary of the above embodiments, the present application sets a normally open solenoid valve 6 on the pipeline 4, and the normally open solenoid valve 6 is used to control the connection or disconnection between the pipeline 4 and the external air, so as to balance the negative pressure inside the pipeline 4 and eliminate the siphon phenomenon. At the same time, the normally open solenoid valve 6 is connected to the control circuit 7 of the drainage pump 3, that is, when the drainage pump 3 is turned on, the normally open solenoid valve 6 is immediately energized and the normally open solenoid valve 6 is turned off, and the pipeline 4 is drained normally at this time; when the drainage pump 3 is turned off, the normally open solenoid valve 6 is delayed to lose power, so that the normally open solenoid valve 6 is delayed to be turned on, and during the time of delayed conduction, the high-pressure water generated by the drainage pump 3 in the pipeline 4 will gradually tend to low-pressure water when the drainage pump 3 is turned off, and the normally open solenoid valve 6 reaches the specified delayed conduction time at this time, so as to prevent water from spraying out from the normally open solenoid valve 6.

[0027] The device can eliminate the siphon phenomenon in the pipeline 4 through the normally open electromagnetic valve 6, stop automatic drainage, and prevent the pipeline 4 from being filled with liquid and freezing after the pump is stopped. At the same time, the delayed conduction of the normally open electromagnetic valve 6 can prevent high-pressure water in the pipeline 4 from being sprayed out.

[0028] Please refer to Figure 1. The device also includes a control circuit 7 for controlling the operation of the drainage pump 3. The control circuit 7 is based on the commonly used control circuit of the existing three-phase motor, and adds an auxiliary normally open contact KM172, a delay relay coil KT73 and a normally open delayed disconnect contact 74. The normally open contact KM71 is used to control the power on and off of the drainage pump 3 motor, and the auxiliary normally open contact KM172 is connected in series with the delay relay coil KT73 and then connected in parallel with the normally open contact KM71; at the same time, the normally open delayed disconnect contact 74 of the delay relay coil KT73 is connected in series with the normally open solenoid valve 6, and after the two are connected in series, they are connected in parallel with the auxiliary normally open contact KM172 and the delay relay coil KT73.

[0029] When the drain pump 3 is turned on, the normally open contact KM71 is immediately closed, and the auxiliary normally open contact KM172 is closed at the same time. At this time, the delay relay coil KT73 is immediately energized, and the normally open delayed disconnect contact 74 is also immediately closed, so that the normally open electromagnetic valve 6 is immediately energized, that is, the normally open electromagnetic valve 6 is immediately turned off, and the drain pump and pipeline 4 can drain normally. When the drain pump 3 is turned off, the normally open contact KM71 is immediately disconnected, and the auxiliary normally open contact KM172 is disconnected at the same time. At this time, the delay relay coil KT73 is immediately de-energized. At the same time, the normally open delayed disconnect contact 74 will be disconnected after a certain delay, so that the normally open electromagnetic valve 6 will also be delayed for a period of time. Delay conduction, so the normally open electromagnetic valve 6 will be delayed. In this embodiment, the delay of the normally open delayed disconnect contact 74 is set to 5s. Of course, different delay times can also be selected according to the length of the pipeline 4 and the displacement of the drain pump 3, and there are no excessive restrictions here.

[0030] At the same time, we consider that the common normally closed solenoid valve needs to be in the normally open state most of the time to eliminate the siphon phenomenon, so the solenoid valve coil must be energized for a long time, and it is an outdoor equipment and is very easy to burn out. Therefore, we choose to use the normally open solenoid valve 6. The solenoid coil is energized only when the pump is turned on and the valve is closed, which can solve the problem of the solenoid valve coil being energized and damaged for a long time when the pump is not turned on for a long time.

[0031] In addition, a manual valve 5 is provided on the pipeline 4, and the manual valve 5 is arranged in parallel with the normally open solenoid valve 6. Similarly, the manual valve 5 is used to manually control the connection or disconnection between the pipeline 4 and the external air. The manual valve 5 and the normally open solenoid valve 6 can be controlled separately without affecting each other, thereby serving as a backup valve to improve the operability of the device.

[0032] It should be noted that the normally open solenoid valve 6 of the present application is located at a high position in the pipeline 4. Please refer to Figure 1, so that after the normally open solenoid valve 6 is turned on, the water in the pipeline 4, which is located on the side close to the low-level pool 2 and at a low position relative to the normally open solenoid valve 6, can be smoothly discharged into the low-level pool 2 to prevent water accumulation in the pipeline 4.

[0033] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0034] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A device for eliminating siphon phenomenon, characterized in that: include: A pipe, one end of which is located in the high-level tank and the other end is located in the low-level tank; a drainage pump connected to the pipeline in the high-level pool and used to pump water into the low-level pool; A normally open solenoid valve, arranged on the pipeline, for controlling the connection or disconnection between the pipeline and the external air; Among them, when the drainage pump is turned on, the normally open solenoid valve is immediately turned off; when the drainage pump is turned off, the normally open solenoid valve is turned on with a delay.

2. The device for eliminating siphon phenomenon according to claim 1, characterized in that: It also includes a control circuit for controlling the operation of the drainage pump, the control circuit includes a normally open contact KM for controlling the power on and off of the motor and an auxiliary normally open contact KM1 connected in parallel with the normally open contact KM, the auxiliary normally open contact KM1 is connected in series with a time delay relay coil KT, the normally open delayed disconnect contact of the time delay relay coil KT is connected in series with the normally open solenoid valve, and after the two are connected in series, they are connected in parallel with the auxiliary normally open contact KM1 and the time delay relay coil KT.

3. The device for eliminating siphon phenomenon according to claim 2, characterized in that: When the auxiliary normally open contact KM1 is energized, the time delay relay coil KT is immediately closed; when the auxiliary normally open contact KM1 is de-energized, the time delay relay coil KT is immediately disconnected, and the normally open delayed disconnection contact is disconnected after a delay of 5 seconds.

4. The device for eliminating siphon phenomenon according to claim 1, characterized in that: The pipeline is also provided with a manual valve, which is arranged in parallel with the normally open solenoid valve and is used to manually control the connection or disconnection between the pipeline and the external air.

5. The device for eliminating siphon phenomenon according to any one of claims 1 to 4, characterized in that: The water inlet end of the pipeline located in the high-level pool is higher than the water outlet end of the pipeline located in the low-level pool.

6. The device for eliminating siphon phenomenon according to claim 5, characterized in that: The normally open solenoid valve is located at a high position of the pipeline, so that after the normally open solenoid valve is turned on, the accumulated water in the pipeline located on the side close to the low-level pool is discharged into the low-level pool.

Images